Astronomy and Cosmology

3713 topics in this forum

1. What gives the 4D universe its persistence?

   By Genecks, July 26, 2014
   • 10 replies
   • 1.6k views
   • 
   • hoola
   • July 27, 2014

2. A fractal universe?

   By Sorcerer, July 21, 2014
   • 6 replies
   • 1.5k views
   • 
   • Sorcerer
   • July 26, 2014

3. DARK MATTER & COLD

   By Dr. Funkenstein, July 22, 2014
   • 2 replies
   • 797 views
   • 
   • Strange
   • July 22, 2014

4. The thermodynamic arrow of time applied to a universe which is accelerating in expansion.

   By Sorcerer, July 21, 2014
   • 1 reply
   • 834 views
   • 
   • hypervalent_iodine
   • July 21, 2014

5. Stellar Parallax ?

   By Dart15, July 16, 2014
   • 4 replies
   • 1.4k views
   • 
   • Dart15
   • July 19, 2014

6. Gravity and pressure.

   By Гера�им, June 30, 2014
   • 20 replies
   • 3.3k views
   • 
   • Mordred
   • July 18, 2014

7. Neil DeGrasse Tyson's Different Perspective of Cosmos

   By ankitmn7, June 16, 2014
   • 5 replies
   • 1.7k views
   • 
   • `hýsøŕ
   • July 4, 2014

8. Fermi Paradox?

   By ydoaPs, June 23, 2014
   • 17 replies
   • 2.4k views
   • 
   • Spyman
   • July 2, 2014

9. Non spherical Supernova Explosion?

   By Nicholas Kang, June 25, 2014
   • 4 replies
   • 1.3k views
   • 
   • Nicholas Kang
   • June 29, 2014

10. Protection by the magnetic field

    By Hazel M, June 21, 2014
    • 19 replies
    • 2.2k views
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    • Acme
    • June 24, 2014

11. The Big Bang (split from What exactly is energy)

    By Mike Smith Cosmos, June 19, 2014
    • 9 replies
    • 1.4k views
    • 
    • Strange
    • June 24, 2014

12. Expandable contraction and the big bang

    By hydrodynamicdan, June 23, 2014
    • 2 replies
    • 782 views
    • 
    • Mordred
    • June 23, 2014

13. The Cross-Section of Solar Flares

    By GeeKay, June 21, 2014
    • 3 replies
    • 993 views
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    • swansont
    • June 22, 2014

14. What are the stages of life of a star of spectral class O?

    By PhantomAvocado, June 22, 2014
    • 2 replies
    • 1.1k views
    • 
    • Mordred
    • June 22, 2014

15. Univers Inside a black hole 1 2 3 4 5

    By Edgard Neuman, April 19, 2014
    • 107 replies
    • 12.3k views
    • 
    • Mordred
    • June 20, 2014

16. Pluto the Dwarf Planet. Why Dwarf? Why Not? 1 2

    By Nicholas Kang, June 11, 2014
    • 26 replies
    • 3.2k views
    • 
    • Nicholas Kang
    • June 19, 2014

17. Gravity Range of a Galaxy

    By Deepak Kapur, June 11, 2014
    • 8 replies
    • 1.4k views
    • 
    • swansont
    • June 13, 2014

18. Black Hole, Grey Hole, Stephen Hawking, Worm Hole

    By Nicholas Kang, June 11, 2014
    • 4 replies
    • 1.8k views
    • 
    • Nicholas Kang
    • June 11, 2014

19. Transmissions From Colony One - A realistic radio play about Mars exploration

    By richtersaurus, June 9, 2014
    • 0 replies
    • 858 views
    • 
    • richtersaurus
    • June 9, 2014

20. Why LIGO does not detect gravitational waves?

    By Гера�им, May 19, 2014
    • 10 replies
    • 2k views
    • 
    • ГераÑ�им
    • June 9, 2014

21. tighter Hubble constant value published 2014

    By Mordred, June 9, 2014
    • 0 replies
    • 948 views
    • 
    • Mordred
    • June 9, 2014

22. metastable Higg's field vs Higg's inflation

    By Mordred, June 7, 2014
    • 4 replies
    • 1.5k views
    • 
    • Mordred
    • June 7, 2014

23. Light and Big Bang

    By Deepak Kapur, June 1, 2014
    • 8 replies
    • 1.5k views
    • 
    • Strange
    • June 6, 2014

24. Gama Ray Bursts datasets that consist of distance modulus and redshift

    By kosmolog, June 4, 2014
    • 1 reply
    • 1k views
    • 
    • hoola
    • June 5, 2014

25. What is the mathematical equation for the best-fit model of CMB power spectrum?

    By awu, June 3, 2014
    • 6 replies
    • 2k views
    • 
    • awu
    • June 5, 2014